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Reference: Hanes SD, et al. (1989) Sequence and mutational analysis of ESS1, a gene essential for growth in Saccharomyces cerevisiae. Yeast 5(1):55-72

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Abstract

A newly isolated gene, ESS1, was shown to encode a protein required for vegetative growth in Saccharomyces cerevisiae. The nucleotide sequence of ESS1 revealed a 172 amino acid open reading frame predicting a highly basic, 19.5 kilodalton product. Although the gene was isolated by cross-hybridization with the vertebrate v-sis oncogene, the primary amino acid sequence bears only a slight resemblance to the p28sis protein. ESS1 was shown to be single copy in the yeast genome and transcriptionally active during logarithmic growth. It is located on the right arm of chromosome X, 6 centimorgans distal to ilv3. The genetic map location indicates it is not allelic to any previously characterized mutation in this organism. Both inactivation of ESS1 by gene disruption and overexpression by fusion to a heterologous promoter were detrimental to growth in both haploid and diploid cell types. Under non-permissive conditions, the terminal phenotype of strains containing a suppressible amber mutation within ESS1 was one of aberrant multibudded structures. Examination of this morphology indicates that loss of ESS1 function may lead to a defect in cytokinesis or cell separation.

Reference Type
Journal Article
Authors
Hanes SD, Shank PR, Bostian KA
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